/// <summary>
/// Parses the polygonal data from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParsePolygonalData(DataReader3DS dataSegment)
{
int i; // counter
DataReader3DS subSegment = dataSegment.GetNextSubSegment(); // working data subsegment
while (subSegment != null)
{
switch (subSegment.Tag)
{
case 0x4110: // Subsegment contains vertex information
this.currentMeshData.Vertices = new Point3D[subSegment.GetUShort()];
for (i = 0; i < this.currentMeshData.Vertices.Length; i++)
{
this.currentMeshData.Vertices[i].X = subSegment.GetFloat();
this.currentMeshData.Vertices[i].Y = subSegment.GetFloat();
this.currentMeshData.Vertices[i].Z = subSegment.GetFloat();
}
break;
case 0x4160: // Subsegment contains translation matrix info (ignore for now)
break;
case 0x4120: // Subsegment contains face information
this.ParseFaceData(subSegment);
break;
case 0x4140: // Subsegment contains texture mapping information
this.currentMeshData.TextureCoordinates = new Point2D[subSegment.GetUShort()];
//HACK: This is because the above array allocation doesn't automatically
//HACK: create each element.
for (i = 0; i < this.currentMeshData.TextureCoordinates.Length; i++)
{
this.currentMeshData.TextureCoordinates[i] = new Point2D();
}
//HACK: End hack.
if (this.currentMeshData.TextureCoordinates.Length != this.currentMeshData.Vertices.Length)
{
Console.WriteLine("WARNING: Possible errors in texture coordinate mapping!");
}
for (i = 0; i < this.currentMeshData.TextureCoordinates.Length; i++)
{
this.currentMeshData.TextureCoordinates[i].X = subSegment.GetFloat();
this.currentMeshData.TextureCoordinates[i].Y = subSegment.GetFloat();
}
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Also use face data to calculate vertex normals
this.CalculateVertexNormals();
}
/// <summary>
/// Parses color data from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
/// <returns>
/// Returns the color that was parsed.
/// </returns>
protected RGBColor ParseColorData(DataReader3DS dataSegment)
{
RGBColor result = RGBColor.Black;
switch (dataSegment.Tag)
{
case 0x0010: // Color is in float format
result.R = dataSegment.GetFloat();
result.G = dataSegment.GetFloat();
result.B = dataSegment.GetFloat();
break;
case 0x0011: // Color is in byte format
result.R = dataSegment.GetByte() / 255.0f;
result.G = dataSegment.GetByte() / 255.0f;
result.B = dataSegment.GetByte() / 255.0f;
break;
default: // If there are any other formats, then we ignore them
break;
}
return(result);
}
/// <summary>
/// Parses the texture weight from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParseTextureWeight(DataReader3DS dataSegment)
{
switch (dataSegment.Tag)
{
case 0x0030: // Percentage is in short format
this.currentMaterialData.textureWeight = ((float)dataSegment.GetUShort()) / (float)100.0;
break;
case 0x0031: // Percentage is in float format
this.currentMaterialData.textureWeight = dataSegment.GetFloat();
break;
default: // There should be no other formats, but if there are then we ignore
break;
}
}
/// <summary>
/// Parses the texture weight from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
protected void ParseTextureWeight(DataReader3DS dataSegment)
{
switch (dataSegment.Tag) {
case 0x0030: // Percentage is in short format
this.currentMaterialData.textureWeight = ((float) dataSegment.GetUShort()) / (float) 100.0;
break;
case 0x0031: // Percentage is in float format
this.currentMaterialData.textureWeight = dataSegment.GetFloat();
break;
default: // There should be no other formats, but if there are then we ignore
break;
}
}
/// <summary>
/// Parses color data from the current data segment.
/// </summary>
/// <param name="dataSegment">
/// Contains the data to be parsed.
/// </param>
/// <returns>
/// Returns the color that was parsed.
/// </returns>
protected RGBColor ParseColorData(DataReader3DS dataSegment)
{
RGBColor result = RGBColor.Black;
switch (dataSegment.Tag) {
case 0x0010: // Color is in float format
result.R = dataSegment.GetFloat();
result.G = dataSegment.GetFloat();
result.B = dataSegment.GetFloat();
break;
case 0x0011: // Color is in byte format
result.R = dataSegment.GetByte() / 255.0f;
result.G = dataSegment.GetByte() / 255.0f;
result.B = dataSegment.GetByte() / 255.0f;
break;
default: // If there are any other formats, then we ignore them
break;
}
return result;
}